AMSOIL Z-ROD™ Synthetic Motor Oil is specially engineered for classic and high-performance vehicles. It features a high-zinc formulation to prevent wear on flat-tappet camshafts and other critical engine components, along with a proprietary blend of rust and corrosion inhibitors for added protection during long-term storage. Z-ROD Synthetic Motor Oil is designed to perform on the street and protect during storage.

Product Description
AMSOIL Z-ROD™ Synthetic Motor Oil is specially engineered for classic and high-performance vehicles. It features a high-zinc formulation to prevent wear on flat-tappet camshafts and other critical engine components, along with a proprietary blend of rust and corrosion inhibitors for added protection during long-term storage. Z-ROD Synthetic Motor Oil is designed to perform on the street and protect during storage.

AMSOIL, the leader in automotive synthetic lubrication, produced the world’s first API-qualified synthetic motor oil in 1972. Trust the extensive experience of AMSOIL, the First in Synthetics®, to do the best job protecting your engine.

Protects Flat-Tappet Cams
The lifters and cam lobes on flat-tappet camshafts common to classic and high performance vehicles slide rapidly against one another, producing high friction and heat. The friction between the two components can eventually wear down the cam and affect valve operation, ultimately resulting in lost engine power and reduced efficiency. In addition, these areas are splash-lubricated rather than pressure lubricated like other areas of the engine, which adds extra strain on anti-wear additives like the zinc and phosphorus in zinc dialkyldithiophosphate (ZDDP).

Provides Long-Term Protection from Rust & Corrosion
AMSOIL Z-ROD Synthetic Motor Oil is formulated with a unique blend of rust and corrosion inhibitors to ensure maximum protection during long-term storage. To prove its effectiveness, AMSOIL submitted Z-ROD Synthetic Motor Oil to the Standard Test Method for Rust Protection in the Humidity Cabinet (ASTM D-1748). This test evaluates the rust-preventative properties of oil under high-humidity conditions, similar to those faced by a covered hot rod in a damp garage. The metal coupon treated with AMSOIL Z-ROD Synthetic Motor Oil showed no signs of oxidation after 192 hours, while the coupon treated with a leading competitor’s product failed the test after 24 hours.

COMPATIBILITY
AMSOIL Z-ROD Synthetic Motor Oils are compatible with conventional and other synthetic motor oils. Mixing AMSOIL Z-ROD Synthetic Motor Oils with other oils, however, will shorten the oil’s life expectancy and reduce the performance benefits. Aftermarket oil additives are not recommended for use with AMSOIL Z-ROD Synthetic Motor Oils.

SERVICE LIFE
Because engines in classic cars, hot rods and other performance vehicles are generally modified, a universal oil drain interval recommendation for these applications cannot be given. Responsibility for determining the drain interval duration rests with the owner. As a general service guideline, the maximum drain interval for Z-ROD Synthetic Motor Oil should not exceed 5,000 miles or one year, whichever comes first. In heavily modified engines (e.g. forced induction, nitrous) the maximum drain interval should not exceed 3,000 miles or one year, whichever comes first.

HEALTH & SAFETY
This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Material Safety Data Sheet (MSDS).

Did this product meet your expectations?

Classic car oil

I have been an Amsoil customer for over 15 years and they keep coming out with great products. I use nothing but Amsoil in all my toys.

Item Reviewed: AMSOIL Z-ROD 10W-30 Synthetic Motor Oil (ZRT)

February 7th, 2018 at 10:49 am

Reviewed by JR CHRYSLER:

ONLY OIL I'LL PUT IN !

PUT Z-ROD IN FRESH ENGINE AFTER BREAK IN, RAN 15,000 MILES AND IT WAS AMAZINGLY CLEAN, ALSO USE IT IN ALL MY AIR COOLED ENGINES. THEY ALL RUN QUIETER & EASE STARTING !

Item Reviewed: AMSOIL Z-ROD 10W-30 Synthetic Motor Oil (ZRT)

January 23rd, 2018 at 3:47 am

Reviewed by Jake:

I will buy this countlessly

Theres nothing else out there likeit if your looking for that zinc protection

Item Reviewed: AMSOIL Z-ROD 10W-30 Synthetic Motor Oil (ZRT)

January 21st, 2018 at 12:24 pm

Reviewed by WOMPUS:

A long time user

I've been using Amsoil since the early 70's. Everything from my air compressors to my boat motor.Never had one single issue with anything I ever used it on! One of my air compressor I bought in the early 70's.. I still have the very same compressor and it has NEVER let me down!!One of my service trucks had over 368,000 miles on the motor when I sold it. Never used a drop of oil between oil changes, and didn't even smoke a bit! The oil I just bought is what I use in both my cars.Will I ever use another brand of oil? NO WAY!! My motorcycle has over 322,000 miles on it and never.. NEVER used a drop of oil, never leaked, and most important, never let me down! (and no, it's not a Harley!)I've talked a lot of people into going with Amsoil over the years and they have thanked me for it many times.It's by far the best oil I have ever used and will never use anything else!

Item Reviewed: AMSOIL Z-ROD 10W-30 Synthetic Motor Oil (ZRT)

October 30th, 2017 at 2:32 am

Reviewed by Bronco Driver:

Saves the Cam

I drive a '93 Bronco with after market heads, lifters, and camshaft. With the increased pressure on the lifters from the stronger valve springs and bigger cam. I was wearing out camshafts every 3 years or so. Since I discovered AMSOIL and their Z-Rod oil, I haven't had to replace a single cam. I've had my used Z-Rod oil analyzed after 3000 miles and there were no traces of metal from my camshaft. Great oil for flat tappet lifters.

Item Reviewed: AMSOIL Z-ROD 10W-30 Synthetic Motor Oil (ZRT)

September 3rd, 2017 at 3:56 am

Reviewed by Nool:

Good product, I will buy more.

I use this product in my custom cars. It is good for cars that are not driven daily. Very quick shipping to my home.

Item Reviewed: AMSOIL Z-ROD 10W-30 Synthetic Motor Oil (ZRT)

August 11th, 2017 at 5:40 am

Reviewed by none:

oil

good prduct

Item Reviewed: AMSOIL Z-ROD 10W-30 Synthetic Motor Oil (ZRT)

July 7th, 2017 at 12:12 am

Reviewed by B:

I like zrod

Use in a big cam Camaro, does its job well.

Item Reviewed: AMSOIL Z-ROD 10W-30 Synthetic Motor Oil (ZRT)

July 5th, 2017 at 11:58 am

Reviewed by NastyNova:

Premium protection for HP Engines

No need for additives; Z-Rod has the ZDDP to protect your flat tappet cam and lifters.

Item Reviewed: AMSOIL Z-ROD 10W-30 Synthetic Motor Oil (ZRT)

June 26th, 2017 at 11:02 am

Reviewed by Randy:

Z Rod 10/30

I have a 1971 Chevrolet C10 350 and A 1967 Chevrolet El Camino 283 both are flat tappet cam engines Z Rod with the added zinc gives them the protection they need so I don't have to worry about wiping a cam.

Item Reviewed: AMSOIL Z-ROD 10W-30 Synthetic Motor Oil (ZRT)

June 25th, 2017 at 3:24 pm

Reviewed by Brad:

Best oil

Z rod oil protects all moving parts extremely well.

Item Reviewed: AMSOIL Z-ROD 10W-30 Synthetic Motor Oil (ZRT)

June 16th, 2017 at 11:01 pm

Reviewed by Galaxiejosh:

My cars new oil.

After a few valve train part failures I decided finally to get some good oil on top of regular checks. Found this and it is formulated for flat tapped and solid roller cams. Since switching I've noticed a bit better oil pressure and also it does not leak where I had a very small leak before. I would recommend to all with this type of cam that wait to change oil once a season.

Item Reviewed: AMSOIL Z-ROD 10W-30 Synthetic Motor Oil (ZRT)

June 2nd, 2017 at 10:03 am

Reviewed by Caine:

Good American oil

I have a 2001 gmc sierra 2500hd with the lq4 6.0 vortec, it has a bigger cam, longtubes with x pipe, cat delete, 42 pound injectors and some other performance mods. The truck has 210,000 miles on it and runs very healthy. Ive always liked amsoil products, ive noticed i burn less oil on 2000 mile trips. Castrol was the worst burning 1qt every 500 miles, valvoline and mobil 1 were about 1qt every 1000 miles and amsoil signature was at a half qt at 1000-1200 miles all were 5w30s. The zrod i put about 5000 miles on and the biggest thing ive noticed was it has less blow by than other oils ive used, i have a catch can to determine that. With zrod i had maybe an 1/8th cup of oil in the catch can after 5000 miles, im used to a quater or half a cup. The only thing i wish amsoil had was a high zinc and phospherous oil that was something other than 10w30, 10w40 or 20w50. I would like to see more variety like a 5w30 high zinc oil for people like me in wyoming with 40 below winters and dont care about emissions. All in all Its a good American oil.

Item Reviewed: AMSOIL Z-ROD 10W-30 Synthetic Motor Oil (ZRT)

May 16th, 2017 at 1:42 pm

Reviewed by Dirty mike_oni_gaijin:

WORKS LIKE A CHARM!

I love ams oil, and recently converted my truck to their z-Rod synthetic. My truck seems to idle better and run smoother. It also has a leaky valve seal and on start up will smoke a little bit, but after using this Z-rod it significantly stopped the smoking on start up!!!

Item Reviewed: AMSOIL Z-ROD 10W-30 Synthetic Motor Oil (ZRT)

April 28th, 2017 at 3:59 am

Reviewed by HackinCaddie:

High Mileage Engine

1st Time using this Z Rod oil if it's like everything else Amsoil makes I'm sure I'll be satisfied

Item Reviewed: AMSOIL Z-ROD 10W-30 Synthetic Motor Oil (ZRT)

April 24th, 2017 at 11:11 am

Reviewed by Johhnystock:

The best for internally modified LS

I use it bc of extra zinc to protect since the valvetrain is modified with a 231/236 duration 640 615' lift 11lsa in my LS3. Running strong since 1 year/ 8k miles with either Amsoil or Wix filter. I wont go back to cheap oil (like false synthetic with 50/50 blend on Canadian Tire shelves).

Item Reviewed: AMSOIL Z-ROD 10W-30 Synthetic Motor Oil (ZRT)

April 16th, 2017 at 9:45 am

Reviewed by deuce:

the good stuff

This oil always maintaines 3 to 4 lbs oil pressure more than the last oil I used. Since I had my ZL-1 modified to 940HP at the crank I needed the best oil I could find. I do change the engine oil and rear end lube more often than normal but its worth it!

Item Reviewed: AMSOIL Z-ROD 10W-30 Synthetic Motor Oil (ZRT)

April 14th, 2017 at 3:47 pm

Reviewed by BuggyMan:

High zinc for my air cooled

This product was recommended to me to use in my air cooled engine which is in my newly restored Dune Buggy. Due to it's high zinc content it is great for flat tappet motors and it's great lubrication on the engines moving parts. I will always use this product in my air cooled engine.

Item Reviewed: AMSOIL Z-ROD 10W-30 Synthetic Motor Oil (ZRT)

February 28th, 2017 at 9:48 am

Reviewed by Chip:

Z-Rod oil

I build Street Rods and Amsoil Z-Rod oil is the best for the vehicles I build, as Street Rods set a lot over the winter and also during the summer months. This oil is perfect for thesesively type of vehicle and I've researched oil extensively at SEMA ever year!!! If you have a flat tappet cam engine you had better be using Z-Rod oil or your cam is living on borrowed time!!!! The zine and phosphorus was removed from most all oils to protect the Catalytic converters on late model vehicles, so if you have a early model engine there is no protection for that cam and lifters!!!!

Item Reviewed: AMSOIL Z-ROD 10W-30 Synthetic Motor Oil (ZRT)

February 13th, 2017 at 12:38 pm

Reviewed by Geech:

Classic car excellent

I now use this in all my classic cars, and street rod

Item Reviewed: AMSOIL Z-ROD 10W-30 Synthetic Motor Oil (ZRT)

February 9th, 2017 at 11:13 am

Reviewed by Scott:

Best oil....period!!!!

Using the ZROD in an old Ford LTD. AMSOIL has the best oil and a specific oil for everything

Item Reviewed: AMSOIL Z-ROD 10W-30 Synthetic Motor Oil (ZRT)

December 31st, 2016 at 10:36 am

Reviewed by Lou:

Excellent product!

One the few oils that protect flat tappet engines. Tests show it to have the correct amount of zinc and it outperforms every other oil. I have used Amsoil since 1975 and have always been satisfied with its wuality and protection.

Item Reviewed: AMSOIL Z-ROD 10W-30 Synthetic Motor Oil (ZRT)

December 28th, 2016 at 2:27 pm

Reviewed by ANTHONY:

Z-ROD for my Classic Vette

I've been running this in my 1972 Corvette for the last five years and love it. I change it out every fall so she's ready to go for the spring!

Item Reviewed: AMSOIL Z-ROD 10W-30 Synthetic Motor Oil (ZRT)

December 24th, 2016 at 11:25 am

Reviewed by Eldon:

Good product for seldom driven street rod.

I purchase this product for my neighbor to use in his street rod. He puts very few miles on it feels that the formulation of this oil will insure the longevity of his engine. This is the only oil he has used in that engine since the break in oil he used after building it.

Item Reviewed: AMSOIL Z-ROD 10W-30 Synthetic Motor Oil (ZRT)

December 18th, 2016 at 10:24 am

Reviewed by Ken:

I will always use amsoil products.

Use this oil in my Jeep 4.6 stroker. Great oil love it.

Item Reviewed: AMSOIL Z-ROD 10W-30 Synthetic Motor Oil (ZRT)

December 16th, 2016 at 1:18 pm

Reviewed by Marathoner:

I would and have purchased this item in the past.

The oil itself appears to be living up to its standards from what I have observed. I have used it in my two GTO's and the purpose for purchasing it was due to the storage during the winter months. By using the synthetic oil I do see my 1966 GTO running somewhat cooler when running on the highway. So far I am completely satisfied with the change over to the Z-Rod Oil

Item Reviewed: AMSOIL Z-ROD 10W-30 Synthetic Motor Oil (ZRT)

September 11th, 2016 at 12:52 pm

Reviewed by John:

Tough oil

Keeps the engine clean ands hold pressure well in bbc.

Item Reviewed: AMSOIL Z-ROD 10W-30 Synthetic Motor Oil (ZRT)

August 30th, 2016 at 3:14 am

Reviewed by Harry:

High Zinc content

Used this oil in both my classic cars and have had no problems

Item Reviewed: AMSOIL Z-ROD 10W-30 Synthetic Motor Oil (ZRT)

August 29th, 2016 at 11:39 am

Reviewed by Chip:

Long awaited product in 10w-30

Gives up barely anything in oil pressure compared to the heavier 10w-40 AMO, while promising better cold flow and mileage.
This ZRT is on the thick side of a 10w-30 - fortified with vitamins, some moly & heavily friction modified, I believe it will start replacing the already excellent AMO in my domestic V8s.
The high TBN tells me its far more than a 5000 mile oil but as per the Farkas's recommendation, I will have the used oil tested at 5000 miles to verify.
A great choice with help from the always willing Alex & Anne duo.

Item Reviewed: AMSOIL Z-ROD 10W-30 Synthetic Motor Oil (ZRT)

October 16th, 2014 at 4:01 pm

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